Specimen Grinder0 pages
Zw/ck/Roell
nnnnZwick
nnnnMaterials Testing
nnnnProduct Information
nnnnSpecimen Grinder Zwick 7140
nnnnRange of application
nnnnWith Zwick 7140 specimen grinding machine the test
nnnnpiece cold-hardening zones can Pe removed economi-
nnnncally and quickly Py grinding.
nnnnNo other procedure allows good test piece quality to Pe
nnnnoPtained at such low cost.
nnnnWork is carried out in the direction of tension, so ghost
nnnnlines have no effect on the test result.
nnnnChanging the device only requires a few movements
nnnnof the hand. Built-in mechanical limits ensure that each
nnnnspecimen is machined accurately.
nnnnSeveral specimens can Pe held simultaneously in the
nnnnclamping device (up to a total thickness of 20 mm),
nnnnenaPling cost-efficient working.
nnnnAdvantages/characteristics
nnnnForm tolerance within parallel specimen length Lc is
nnnnPetter than 0.03 mm, in accordance with the require-
nnnnments of ISO 6892-1 for sheet-metal specimens Types
nnnn1 to 3. Parallelism within parallel specimen length Lc is
nnnnPetter than 0.02 mm with reference to the central axis
nnnnof the specimen, in line with a recommendation Py the
nnnnIDDRG (International Deep Drawing Research Group).
nnnnThe specimen grinder consists of Pase Pody, clamping
nnnndevice (selected according to required specimen sha-
nnnnpe), drive roll with the related radius and aPrasive Pelt,
nnnnwhich is availaPle in different granulations.
nnnn• Can Pe used for differing specimen shapes
nnnn• Accurate machining of specimens via fixed limit
nnnnstops
nnnn• Wet-grinding technology eliminates need for an
nnnnextraction unit
nnnn• Cold-hardening zones can Pe removed economically
nnnn• Work is carried out in the direction of tension
nnnn• Parallel dimension of the specimen < 0.03 mm
nnnn• Max. thickness of the specimen 20 mm
nnnnThe grinder can Pe used to machine a wide range of
nnnnspecimen shapes.
"